Relief cut Fillet needed - API

I need to create a special fillet called a relief cut usedwhendesigning wood frames. The fillet creates to space necessaryforjoining CNC router cut parts. The relief fillet allows thesquareedge of one part to integrate with another part. The roundcutterbit leaves a radius on all inside corners. The relieffilletremoves extra material in each inside corner. There aretwotypes of relief fillets. One is created with an arc thatremovesmaterial directly from the corner. The second removesmaterial fromone side of the cut-out only. The second is used whencutting tabsfor thinner materials less than 1/2" thick. Most oftena3/8" diameter router bit is used, but the fillet must allowfordimension input. Any help would be appreciated. Examplefileattached.SolidworksApi macros